package com.sky.service.impl;

import com.alibaba.fastjson.JSONObject;
import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.context.BaseContext;
import com.sky.dto.*;
import com.sky.entity.*;
import com.sky.exception.AddressBookBusinessException;
import com.sky.exception.OrderBusinessException;
import com.sky.exception.ShoppingCartBusinessException;
import com.sky.mapper.*;
import com.sky.result.PageResult;
import com.sky.service.OrderService;
import com.sky.utils.WeChatPayUtil;
import com.sky.vo.OrderPaymentVO;
import com.sky.vo.OrderStatisticsVO;
import com.sky.vo.OrderSubmitVO;
import com.sky.vo.OrderVO;
import com.sky.websocket.WebSocketServer;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.core.annotation.Order;
import org.springframework.data.domain.Sort;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import javax.print.attribute.standard.MediaSize;
import java.math.BigDecimal;
import java.time.LocalDateTime;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;


@Service
public class OrderServiceImpl implements OrderService {

    @Autowired
    private OrderMapper orderMapper;

    @Autowired
    private UserMapper userMapper;

    @Autowired
    private WeChatPayUtil weChatPayUtil;


    @Autowired
    private OrderDetailMapper orderDetailMapper;

    @Autowired
    private ShoppingCartMapper shoppingCartMapper;

    @Autowired
    private AddressBookMapper addressBookMapper;
    @Autowired
    private WebSocketServer webSocketServer;

    @Override
    @Transactional
    public OrderSubmitVO submitOrder(OrdersSubmitDTO ordersSubmitDTO) {

        //处理各种业务异常(地址簿为空，购物车数据为空)
        AddressBook addressBook= addressBookMapper.getById(ordersSubmitDTO.getAddressBookId());
        if(addressBook==null){
            throw new AddressBookBusinessException(MessageConstant.ADDRESS_BOOK_IS_NULL);
        }
        ShoppingCart shoppingCart=ShoppingCart
                .builder()
                .userId(BaseContext.getCurrentId())
                .build();
        List<ShoppingCart> shoppingCartList =shoppingCartMapper.list(shoppingCart);
        if(shoppingCartList==null|| shoppingCartList.isEmpty()){
            throw new ShoppingCartBusinessException(MessageConstant.SHOPPING_CART_IS_NULL);
        }

        //向订单表插入一条数据
        Orders orders=new Orders();
        BeanUtils.copyProperties(ordersSubmitDTO,orders);
        orders.setOrderTime(LocalDateTime.now());
        orders.setPayStatus(Orders.UN_PAID);
        orders.setStatus(Orders.PENDING_PAYMENT);
        orders.setNumber(String.valueOf(System.currentTimeMillis()));
        orders.setPhone(addressBook.getPhone());
        orders.setConsignee(addressBook.getConsignee());
        orders.setUserId(BaseContext.getCurrentId());
        orderMapper.insert(orders);
        //向订单明细表插入多条数据
        List<OrderDetail> orderDetailList=new ArrayList<>();
        for(ShoppingCart shoppingCartItem:shoppingCartList){
            OrderDetail orderDetail=new OrderDetail();
            BeanUtils.copyProperties(shoppingCartItem,orderDetail);
            orderDetail.setOrderId(orders.getId());//设置当前订单明细关联的订单id
            orderDetailList.add(orderDetail);
        }

        orderDetailMapper.insertBatch(orderDetailList);

        //清空当前购物车数据
        shoppingCartMapper.deleteByUserId(BaseContext.getCurrentId());
        //封装VO对象
        OrderSubmitVO orderSubmitVO=OrderSubmitVO.builder()
                .id(orders.getId())
                .orderNumber(orders.getNumber())
                .orderAmount(orders.getAmount())
                .orderTime(LocalDateTime.now())
                .build();
        Map map=new HashMap();
        map.put("type",1);
        map.put("orderId",orders.getId());
        map.put("content","订单号："+orders.getNumber());
        String json=JSONObject.toJSONString(map);
        webSocketServer.sendToAllClient(json);
        return orderSubmitVO;
    }
    /**
     * 订单支付
     *
     * @param ordersPaymentDTO
     * @return
     */
    public OrderPaymentVO payment(OrdersPaymentDTO ordersPaymentDTO) throws Exception {
        // 当前登录用户id
        Long userId = BaseContext.getCurrentId();
        User user = userMapper.getById(userId);

        //调用微信支付接口，生成预支付交易单
        JSONObject jsonObject = weChatPayUtil.pay(
                ordersPaymentDTO.getOrderNumber(), //商户订单号
                new BigDecimal(0.01), //支付金额，单位 元
                "苍穹外卖订单", //商品描述
                user.getOpenid() //微信用户的openid
        );

        if (jsonObject.getString("code") != null && jsonObject.getString("code").equals("ORDERPAID")) {
            throw new OrderBusinessException("该订单已支付");
        }

        OrderPaymentVO vo = jsonObject.toJavaObject(OrderPaymentVO.class);
        vo.setPackageStr(jsonObject.getString("package"));

        return vo;
    }

    /**
     * 支付成功，修改订单状态
     *
     * @param outTradeNo
     */
    public void paySuccess(String outTradeNo) {

        // 根据订单号查询订单
        Orders ordersDB = orderMapper.getByNumber(outTradeNo);

        // 根据订单id更新订单的状态、支付方式、支付状态、结账时间
        Orders orders = Orders.builder()
                .id(ordersDB.getId())
                .status(Orders.TO_BE_CONFIRMED)
                .payStatus(Orders.PAID)
                .checkoutTime(LocalDateTime.now())
                .build();

        orderMapper.update(orders);


    }

    @Override
    public void reminder(Long id) {
        // 根据订单号查询订单
        Orders ordersDB = orderMapper.getById(id);
        if(ordersDB==null){
            throw new OrderBusinessException(MessageConstant.ORDER_NOT_FOUND);
        }

        Map map=new HashMap();
        map.put("type",2);
        map.put("orderId",id);
        map.put("content","订单号"+ordersDB.getNumber());
        String json=JSONObject.toJSONString(map);

        webSocketServer.sendToAllClient(json);
    }

    @Override
    public PageResult conditionSearch(OrdersPageQueryDTO ordersPageQueryDTO) {
        PageHelper.startPage(ordersPageQueryDTO.getPage(),ordersPageQueryDTO.getPageSize());
        Page<Orders> page=orderMapper.conditionSearch(ordersPageQueryDTO);
        return new PageResult(page.getTotal(),page.getResult());
    }

    @Override
    public OrderStatisticsVO statistics() {
       OrderStatisticsVO vo=new OrderStatisticsVO();
        Integer toBeConfirmed=orderMapper.countByStatus(2);
        Integer confirmed=orderMapper.countByStatus(3);
        Integer deliveryInProgress=orderMapper.countByStatus(4);
        vo.setConfirmed(toBeConfirmed);
        vo.setDeliveryInProgress(deliveryInProgress);
        vo.setConfirmed(confirmed);
        return vo;
    }

    @Override
    public OrderVO details(Long id) {
        Orders orders=orderMapper.getById(id);
        OrderVO orderVO=new OrderVO();
        BeanUtils.copyProperties(orders,orderVO);
        List<OrderDetail> orderDetailList=orderDetailMapper.getByOrderId(id);
        orderVO.setOrderDetailList(orderDetailList);
        return orderVO;
    }

    @Override
    public void complete(Long id) {
        orderMapper.complete(id);
    }

    @Override
    public void delivery(Long id) {
        orderMapper.delivery(id);
    }

    @Override
    public void confirm(Long id) {
        orderMapper.confirm(id);
    }

    @Override
    public void rejection(OrdersRejectionDTO ordersRejectionDTO) {
        orderMapper.rejection(ordersRejectionDTO);
    }

    @Override
    public void cancel(OrdersCancelDTO ordersCancelDTO) {
        orderMapper.cancel(ordersCancelDTO);
    }

    @Override
    public PageResult historyOrders(OrdersPageQueryDTO ordersPageQueryDTO) {
        PageHelper.startPage(ordersPageQueryDTO.getPage(),ordersPageQueryDTO.getPageSize());
        ordersPageQueryDTO.setUserId(BaseContext.getCurrentId());
        Page<Orders> page=orderMapper.conditionSearch(ordersPageQueryDTO);
        List<OrderVO> list = new ArrayList();

        // 查询出订单明细，并封装入OrderVO进行响应
        if (page != null && page.getTotal() > 0) {
            for (Orders orders : page) {
                Long orderId = orders.getId();// 订单id

                // 查询订单明细
                List<OrderDetail> orderDetails = orderDetailMapper.getByOrderId(orderId);

                OrderVO orderVO = new OrderVO();
                BeanUtils.copyProperties(orders, orderVO);
                orderVO.setOrderDetailList(orderDetails);

                list.add(orderVO);
            }
        }
        return new PageResult(page.getTotal(), list);
    }

    @Override
    public void repetition(Long id) {
        Orders orders=orderMapper.getById(id);
        orders.setId(null);
        orders.setOrderTime(LocalDateTime.now());
        orders.setStatus(2);
        List<OrderDetail> orderDetailList=orderDetailMapper.getByOrderId(id);
        orderMapper.insert(orders);
        for(OrderDetail orderDetail:orderDetailList){
            orderDetail.setOrderId(orders.getId());
        }
        orderDetailMapper.insertBatch(orderDetailList);
    }


}
